How to filter reverse dns with "dsl"? |
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Stupid 
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Joined: 28 November 2005 Status: Offline Points: 127 |
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 Topic: How to filter reverse dns with "dsl"?Posted: 07 April 2006 at 5:36pm |
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A lot of spam come from a reverse domain name that has "dsl" or "cable" associated in rDNS lookup. Is there a way to filter those IP addresses? |
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LogSat
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Joined: 25 January 2005 Location: United States Status: Offline Points: 4104 |
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Posted: 09 April 2006 at 11:31am |
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There is no way to search within rDNS text, but please note that some MAPS RBL servers do blacklist dynamic IP addresses, as many of the "dsl" and "cable" are. I think that SORBS is one of them, but am not 100% certain...
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Desperado
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Joined: 27 January 2005 Location: United States Status: Offline Points: 1143 |
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Posted: 10 April 2006 at 12:50pm |
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combined.njabl.org is one that lists DHCP (Dynamic) IP's. I actually stopped using SORBS as they started using extortion if you wanted to get de-listed. As a result, no one de-lists and a lot of false positives started showing up. Hence, I removed it after getting hammered by support calls from our customers.
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The Desperado
Dan Seligmann. Work: http://www.mags.net Personal: http://www.desperado.com |
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